Governor for engines.



J. C. STIER.

GOVERNOR FOR ENGINES.

APPLICATION FILED N0v.5,1910

1,01 2,025. Patented Dec. 19, 1911 2 SHEETS-SHEET l J. C. STIER.

GOVERNOR FOR ENGINES.

APPLICAFION FILED NO\',5,1910

1,012,025. Patented Dec. 19,1911.

2 SHEETSSHBBT 2 B l w Attorneyw a//aim I for Engines,

. desi UN ITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Dec. 19, 1911.

Application iiled November I5, 1910. Serial No. 5903955 To all whom it may concern:

Be it known that I, JOHN C. S'rmn, a citizen of the United States, residing at Mason City, in the county of Cerro Gordo and State of Iowa, have invented certain new and useful Im rovements in Governors of w iich the following is a specification.

This invention relates to combined speed and pressure Igovernors for engines, and is ed to'a rd 11. simple, durable and accura', 1y operable device of this nature, wherein the-speed and pressure overnors comprise fluid operated means, the atter being connected to a throttle rod .or similar part, and also being peculiarlyassembled to attord a com act mechanism.

With the a ove and other objects in view, this invention consists in the construction, combination, and arrangement of parts as hereinafter more fully described claimed, and illustrated in the accompanying drawin wherein- 1 is a central vertical section of, the governor constructed in accordance with the present invention; Fig. 2 is a perspec: tive view of the yoke supporting the control and the throttle rod operator; Fig. 3 is a transverse section taken along line 3-3 of Ifi'g. 1; 4 is a similar section taken along line 44 of Figfl; Fig. 5 is a per spectlve view of the fulcruinof the lever operating the throttle rod; F .6 is affra ,mentary bottom plan "view.o the throtte rod operating the lever, Fig. 7, is a vertical section of themodificat on.

The governor forming the subject matter of the resent invention comprises a linder divided into two compartments, t 0

lower of said compartments having an inner cylinder located therein, #A piston recipin compartment, said pistons operating at a common int upon a bellcrank w ich turn shi a throttle rod. The piston in the uppercompartment is opstated by oil.eonta1ned in the lower com-, linder con--' pertinent surrounding the .cy tained in said lower compartment andcomprises a governor for the of the ene. ,Thepiston contained in the inner cylmder of the lower-compartment is operated by the pressure of the fluid, such as water, etc., in a pressure reservoir in which the au- Quid may be forced by the pump operated by the engine. Said piston and connected 0 crating devices comprise a governor of e pressure.

Referrin more particularly to the drawings, in icates a cylinder divided by the partition 11 into the upper compartment 10 and the lower compartment 10". The lower compartment 10" contains an inner cylinder 12 which is connected at its lower terminal by the pipe 13 to the outlet pump operated by the engine. The piston 14 operates in the cylinder 12 and its piston rod 15 extends upwardly through the partition 11.

A piston 1 reci rocates'in the com rtment 10, the rod '1 of said iston comprising a sleeve which projects t rough the upper cylinder head 0 the cylinder- 10 and opcrates about the piston rod 15 of the, iston 14. The piston 16 is reciprocated y oil forced from the com artment 10 into the compartment 10. is is done b I an outlet pi 18 located adjacent to the owertermina of the compartment 10" and extends to an oil pump of any suitable construction, operated in an suitable manner from the engine. An mitt pipe 19 extends from the oil pump into the compartment 10" and opens into the port 20 which is located in the partition 11. and permits'the oil to pass into the compartment 10', exerting a pressure on the under surface of the piston 16. An outlet 0 or port 21 is oppositely disposed to the inlet rt 20 and permits the oil to return to t e com rtment 10" after the movement of the piston has decreased the speed of the engmeto the requiredamount. A screw 22 operates in the partition--11 and'has its inner terminaltapered in such a manner that the flow of the oil returning to the compartment 10 regulated. page 28 is located between the compartment 0 and the compartment 10" in order that the amount of oil contained therein may be ascertained. A plate'24 is carried by the upper cylinder head of the cylinder 1 and has a central openin through which the sleeve 17 upon t e rod 15 operates. A bracket 26 is crank is connected with a throttle the up rod 29 while the opposite terminal thereof has the ball counterbalance, 30 reciprocatin ly and adjustably mounted thereon.

i yoke 31 is mounted on the plate 24 to span the bell crank 27 and the openings 25 and 28. This oke carries a tube 32 through which the to 15 projects. A cover 33 1s threaded on the tube 32 and forms a bearing for the thumb nut 34 which is threaded on er terminal of the rod 15 projecting throu the cover 33. A plate 35 is mounts on a s' oulder formed ad acent to the upper terminal of the rod 15 and forms a bearing for one'end of a spring 36 interposed between the cover, 33 and said plate.

A shoulder 37 is formed on the rod 15 adjacent to or rod 17, said shoulder adapted to operate against the disk 38 which loosely bears on the upper terminal of the rod or sleeve 17. This disk is provided with the tapered or triangular projections 39 which are receive in the similarly formed opemn or depressions 40 disposed on each side 0 the openings 28.

From the fore oing it will be understood that when e, pressure in the outlet pipe of the ump increases be 'ond a desired ,point t e water risesin t e cylinder 12, causing the piston 14 and the piston rod 15 to move upwardly. By this movement -\the shoulder 37 engages the disk 38 and causes a pressure to be exerted on the weighted arm of the bell crank 27 thereby operating the throttle rod. The sprinfg 36 forms a resistance to the movement 0 the piston and controls the time of operat on thereof. Should the speed of the engine increase'beyond a desired point, the pum P will likewise operate beyond the desir speed and will pump'oil at a faster rate into the compartment 10 thereby forcm the piston 16 upwardlg. This movement 0 the piston 16 causes't e sleeve or rod 17 to raise the disk 38 andshift the weighted arm of the bell crank 27 against theweight 30 thereby shifting the throttle rod 29.

Referringlto the modification illustrated in Fig. 7, t e piston 14 is eliminated. The inner cylinder 12 rod 15 operates. An elliptical casing 41 is located at the lower terminal of the cylinder 12, said cas' containing a diaphragm 42 which is provided with a socket 43 to receive the lower end of the rod 15'; The water inlet 13 is located on the under side of the casing 41 and permits the water to enter said casin and exert a pressure on the diaphragm, t ereby shifting the rod 15 and causing the throttle rod to operate as in the preferred form.

The piston rod 15 is extended so as to project at its u per end above the top of he cover 33 an an auxiliar spring 15" is interposed tween the'nu 84 and said the upper terminal of the sleeve- .fluid pressure means connected to t is provided in which the cover 33. By the use of the spring 15" the governor is rendered more sensitive, a sprlngiy motion breing imparted to the rod 15 an (piston 14, by the use of said spring 15", an durin the movement of the piston 14 in the c lin er 12.

Having hus full described my invention, what is claim as new is 1. In an en ine ggovernor, the combina' t1on of a spee governor comprising a piston, a pressure governor comprising a piston, piston rods extending from the respectlve pistons of the governors, and one of said rods passing through the other, fluid pressure means for actuating the respective pistons independently or simultaneously,'a throttle rod, and means operable by the respective dpiston rods for actuating. the throttle ro 2. In a speed and pressure overnor, the combination of a cylinder 'vided into separate compartments having a connectin passage, a piston pperating in one of sai compartments, an 011 pump connected with both of the compartments for operation of the piston aforesaid, an auxiliary cylinder arranged in the compartment adjacent to that having the piston therein, a second piston arranged in the auxiliary cylinder, i1" 1' a r t h e aux.

lary 0 mar or oeram te ton therein, a throttle to d, a c aunterbgl nce connected to said rod, and piston rods extending from the respective pistons aforesaid for operating sai counterbalance.

3. In a speed and pressure overnor, the combination of a cylinder fiivided into separate compartments having a connectin passage, a pistonoperating in one of sai compartments, an oil pump connected with both of the (iompartments for operation of the piston a oresaid, an auxilia cylinder arr in the compartment a jacent to that aving the piston therein, a second piston arranged in the auxiliary c linder,

tot e auxuid pressure means connected ihary cyhnder for o crating the piston therein, a throttle r0 a counterbalance connected to said rod, a piston rod extend mg from the piston in one of said compartments and of hollow form, a second piston rod projecting from the piston in theauxiliary cylinder, and means on the respective piston rods for actuating the counterbalance of the throttle rod.

4. In a device of the class described, thecombination with a cylinder, of a pluralit' of compartments formed therein, indepen ent pistons o crating in said compartments, a throttle located adjacent to said cylinder, a counterbalance connected to said throttle rod, a single connection between the rods of said pistons and said counterbalance, a sump adapted to pump oil from one of sai compartments against one of said pistons, and means whereby the remaining piston ma be 0 erated.

5. In a device 0 the c ass described, the combination with a cylinder, of a plurality of compartments formed therein, independent pistons operating in said compartments, a throttle rod located adjacent to said cylinder, a counterbalance connected to said throttle rod, a single connection between 1.0 the rods of said pistons and said counterbalance, a ump adapted to pump oil into one of sai compartments against one of said istons, and pressure means for operatin% t e remaining piston.

11 testimony whereof I afiix my signa- 15 

